Miami Heat at Boston Celtics

FILE - In this Nov. 29, 2012, file photo, San Antonio Spurs' Tiago Splitter (22) goes to the basket past Miami Heat's Rashard Lewis in the first half of an NBA basketball game in Miami. The Heat won 105-100. Winners of 20 games in a row, the Heat could be headed toward history. The Spurs, who host the Heat on March 31, 2013, are one team looking for their opportunity to stop the streak. ( AP Photo/Alan Diaz, File)